hush/coreutils/basename.c
Denis Vlasenko 99912ca733 audit small applets and mark some of them as NOFORK.
Put big scary warnings in relevant places.
2007-04-10 15:43:37 +00:00

51 lines
1.0 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Mini basename implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*
*/
/* BB_AUDIT SUSv3 compliant */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Changes:
* 1) Now checks for too many args. Need at least one and at most two.
* 2) Don't check for options, as per SUSv3.
* 3) Save some space by using strcmp(). Calling strncmp() here was silly.
*/
#include "busybox.h"
/* This is a NOFORK applet. Be very careful! */
int basename_main(int argc, char **argv);
int basename_main(int argc, char **argv)
{
size_t m, n;
char *s;
if (((unsigned int)(argc-2)) >= 2) {
bb_show_usage();
}
s = bb_get_last_path_component(*++argv);
if (*++argv) {
n = strlen(*argv);
m = strlen(s);
if ((m > n) && ((strcmp)(s+m-n, *argv) == 0)) {
s[m-n] = '\0';
}
}
puts(s);
return fflush(stdout);
}